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  • Title: IBL-like T cell lymphoma expressing monoclonal gammopathy (macroglobulinemia) in the serum.
    Author: Kasajima T, Masuda A, Matsuda M, Imai Y, Tobinai K.
    Journal: Histol Histopathol; 1989 Jul; 4(3):271-9. PubMed ID: 2520462.
    Abstract:
    A case of IBL-like T cell lymphoma with serum monoclonal gammopathy was reported. A 58-year-old woman, who had suffered from heart failure, was admitted because of asthma attack, fever and lymphadenopathy. Leucopenia with a small amount of atypical lymphocytes was detected. Serum analysis showed monoclonal elevation of IgM-kappa (M-protein) and hyperviscosity. Urinary Bence-Jones protein was detected. Lymph node biopsy revealed the disappearance of normal structure and proliferation of T cells with pale cells which characterized IBL-like T cell lymphoma. Immunocytochemistry revealed the pale cells to bear T cell markers (MT-1, CD 5, CD 8 or CD 4) and IgM-positive cell distribution. Tonsilar biopsy showed the infiltration of atypical lymphoids and pale cells. Bone marrow biopsy showed moderate lymphoplasmacytoid proliferation with lymph follicles. Clinical data and serum analysis suggested macroglobulinemia. Additional lymph node biopsy was performed and revealed IBL-like T cell lymphoma. IBL-like T cell lymphoma is characterized by polyclonal hypergammaglobulinemia. The present case probably occurred initially as IBL-like T cell lymphoma and lymphoplasmacytoid cell proliferation might have followed due to an excess of CD 4+ cells.
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